with thick, dark-colored mucus or phlegm.7
The American Academy of Otolaryngology says that a strep throat caused by a bacterial infection can cause excess mucus in the throat which drains down the throat.8
Laryngitis is an infection of your voice box which causes inflammation, irritation, and swelling. This cause excess mucus to form in the throat and give a constant urge to clear your throat.9
Smoking
Smoking causes irritation in a person’s lungs which results in black or brown mucus in the throat and airways that won’t
